A lot of designers these days are looking at ways we can harness wasted energy in the home to supplement our energy needs, but the tp roll might be going a little too far. The idea is to harness the spinning motion of the toilet paper roll to generate electricity that powers the unit's secondary function as a portable lamp. Needless to say, the practicality of such a device is questionable. I mean, keeping this thing powered up would require more chili and cheese than I am willing to eat. [Miguel Melgarejo via The Design Blog]